﻿/*   
    Copyright (C) 2009 Galaktika Corporation ZAO

    This file is a part of Galaktika.BusinessMonitor
 
    Galaktika.BusinessMonitor is a free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
      
    You should have received a copy of the GNU General Public License
    along with Galaktika.BusinessMonitor.  If not, see <http://www.gnu.org/licenses/>.
  
    If GPL v.3 is not suitable for your products or company,
    Galaktika Corp provides Galaktika.BusinessMonitor under a flexible commercial license
    designed to meet your specific usage and distribution requirements.
    If you have already obtained a commercial license from Galaktika Corp,
    you can use this file under those license terms.
*/

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Interop;
using Galaktika.BI.Silverlight.Controls.PivotGrid;

namespace Galaktika.BI.Silverlight.ClientApp
{
    public static class FullScreenSwitcher
    {
        public static void Switch()
        {
            App.Current.Host.Content.IsFullScreen = !App.Current.Host.Content.IsFullScreen;
        }

        public static bool IsFullScreen
        {
            get
            {
                return App.Current.Host.Content.IsFullScreen;
            }
        }

        private static object m_OldContent;
        private static Panel m_OldParent;
        private static int m_OldIndex;
        private static Brush m_OldBrush;
        private static UIElement m_Element;
        public static void ShowInFullScreen(UIElement element)
        {
            if (IsFullScreen) return;
            m_Element = element;
            SilverlightHost host = App.CurrentApp.Host;
            if (host != null && host.IsLoaded)
            {
                host.Content.FullScreenChanged += new EventHandler(Content_FullScreenChanged);
                Switch();
            }
        }

        static void Content_FullScreenChanged(object sender, EventArgs e)
        {
            Page page = App.CurrentApp.RootVisual as Page;
            SilverlightHost host = App.CurrentApp.Host;
            if (page != null && host != null && host.IsLoaded)
            {
                if (!IsFullScreen)
                {
                    UIElement element = page.ContentHolder.Content as UIElement;                    
                    page.ContentHolder.Content = string.Empty;
                    m_OldParent.Children.Insert(m_OldIndex, element);
                    page.LayoutRoot.Background = m_OldBrush;
                    page.ContentHolder.Content = m_OldContent;
                    host.Content.FullScreenChanged -= new EventHandler(Content_FullScreenChanged);
                    m_OldContent = null;
                    m_OldParent = null;
                }
                else
                {
                    m_OldContent = page.ContentHolder.Content;
                    m_OldParent = (Panel)VisualTreeHelper.GetParent(m_Element);
                    m_OldIndex = m_OldParent.Children.IndexOf(m_Element);
                    m_OldParent.Children.Remove(m_Element);
                    m_OldBrush = page.LayoutRoot.Background;

                    page.LayoutRoot.Background = new SolidColorBrush(Colors.White);
                    page.ContentHolder.Content = m_Element;                    
                    m_Element = null;
                }
            }
        }
    }
}
